.main .header {
  height: 80px;
  background: rgba(0, 0, 0, 0.8);
}
.main .header .logo {
  float: left;
}
.main .header .mod_nav {
  float: left;
  height: 80px;
  line-height: 80px;
  font-size: 18px;
}
.main .header .mod_nav li {
  float: left;
}
.main .header .mod_nav li a {
  display: inline-block;
  height: 80px;
  line-height: 80px;
  padding: 0 15px;
  color: #fff;
}
.main .header .mod_nav li a:hover {
  color: #31c27c;
}
.main .header .mod_nav li .index {
  color: #23b45b;
}
.main .header .mod_identity {
  float: right;
  height: 80px;
  line-height: 80px;
}
.main .header .mod_identity span {
  color: #fff;
}
.main .header .mod_identity a:nth-child(2) {
  display: inline-block;
  height: 30px;
  margin-top: 0;
  line-height: 30px;
  font-size: 14px;
  padding-left: 12px;
  padding-right: 12px;
  border-radius: 30px;
  background-color: #31c27c;
  color: #fff;
  margin-left: 10px;
}
.main .header .mod_identity a:nth-child(3) {
  display: inline-block;
  height: 30px;
  margin-top: 0;
  line-height: 26px;
  font-size: 14px;
  padding-left: 12px;
  padding-right: 12px;
  border-radius: 30px;
  color: #31c27c;
  border: 2px solid #31c27c;
  margin-left: 10px;
}
.main .mod_banner {
  height: 900px;
  background: url(../img/banner_thumb_1.jpg);
  text-align: center;
  position: relative;
}
.main .mod_banner .banner_show_content {
  height: 234px;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 500px;
  margin-left: -250px;
  margin-top: -50px;
}
.main .mod_banner .banner_show_content h2 {
  background: url(../img/精灵图.png) no-repeat 0 0;
  width: 500px;
  height: 104px;
}
.main .mod_banner .banner_show_content p {
  height: 33px;
  background: url(../img/精灵图.png) no-repeat -17px -298px;
}
.main .mod_banner .banner_show_content a {
  display: block;
  width: 320px;
  height: 64px;
  line-height: 64px;
  font-size: 34px;
  text-align: center;
  margin: 0 auto;
  border-radius: 99px;
  background-color: #31c27c;
  color: #fff;
  overflow: hidden;
  margin-top: 20px;
}
.main .mod_banner .banner_show_nav {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 164px;
  background: rgba(0, 0, 0, 0.1);
}
.main .mod_banner .banner_show_nav a:nth-child(1) {
  float: left;
  background: url(../img/精灵图.png) no-repeat -837px -17px;
  width: 300px;
  height: 100px;
  margin-top: 15px;
}
.main .mod_banner .banner_show_nav a:nth-child(2) {
  float: left;
  background: url(../img/精灵图.png) no-repeat -509px -117px;
  width: 300px;
  height: 100px;
  color: #707070;
  margin-top: 15px;
  opacity: 0.4;
  transition: 0.5s all;
}
.main .mod_banner .banner_show_nav a:nth-child(2):hover {
  opacity: 1;
}
.main .mod_banner .banner_show_nav a:nth-child(3) {
  color: #707070;
  float: left;
  background: url(../img/精灵图.png) no-repeat -546px -216px;
  width: 300px;
  height: 100px;
  margin-top: 15px;
  opacity: 0.4;
  transition: 0.5s all;
}
.main .mod_banner .banner_show_nav a:nth-child(3):hover {
  opacity: 1;
}
.main .mod_feature {
  height: 1100px;
}
.main .mod_feature .feature_bg {
  height: 740px;
  background: url(../img/feature_thumb_1.jpg);
}
.main .mod_feature .feature_intro {
  padding-top: 40px;
  height: 400px;
  z-index: 20;
}
.main .mod_feature h2 {
  margin: 0 auto 25px;
  width: 460px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -29px -308px;
}
.main .mod_feature p {
  margin: 0 auto 0;
  width: 740px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -36px -7px;
}
.main .mod_feature ul {
  text-align: center;
}
.main .mod_feature ul li {
  display: inline-block;
  margin: 0 10px;
  width: 150px;
  text-align: center;
  color: #aaa;
}
.main .mod_feature ul li a .panle {
  margin: 0 auto;
  display: block;
  width: 100px;
  height: 100px;
}
.main .mod_feature ul li a .icon {
  background: url(../img/精灵图2.png) no-repeat -410px -500px;
}
.main .mod_feature ul li a .icon1 {
  background: url(../img/精灵图2.png) no-repeat -3px -603px;
}
.main .mod_feature ul li a .icon2 {
  background: url(../img/精灵图2.png) no-repeat -106px -600px;
}
.main .mod_feature1 {
  height: 1100px;
}
.main .mod_feature1 .feature_bg1 {
  height: 740px;
  background: url(../img/feature_thumb_2.jpg);
}
.main .mod_feature1 .feature_intro1 {
  padding-top: 40px;
  height: 400px;
  z-index: 20;
}
.main .mod_feature1 h2 {
  margin: 0 auto 25px;
  width: 460px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -37px -374px;
}
.main .mod_feature1 p {
  margin: 0 auto 0;
  width: 740px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -27px -69px;
}
.main .mod_feature1 ul {
  text-align: center;
}
.main .mod_feature1 ul li {
  display: inline-block;
  margin: 0 10px;
  width: 150px;
  text-align: center;
  color: #aaa;
}
.main .mod_feature1 ul li a .panle {
  margin: 0 auto;
  display: block;
  width: 100px;
  height: 100px;
}
.main .mod_feature1 ul li a .icon1 {
  background: url(../img/精灵图2.png) no-repeat -201px -606px;
}
.main .mod_feature1 ul li a .icon2 {
  background: url(../img/精灵图2.png) no-repeat -307px -603px;
}
.main .mod_feature1 ul li a .icon3 {
  background: url(../img/精灵图2.png) no-repeat -5px -497px;
}
.main .mod_feature1 ul li a .icon4 {
  background: url(../img/精灵图2.png) no-repeat -106px -500px;
}
.main .mod_feature2 {
  height: 1100px;
}
.main .mod_feature2 .feature_bg2 {
  height: 740px;
  background: url(../img/feature_thumb_3.jpg);
}
.main .mod_feature2 .feature_intro2 {
  padding-top: 40px;
  height: 400px;
  z-index: 20;
}
.main .mod_feature2 h2 {
  margin: 0 auto 25px;
  width: 460px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -6px -433px;
}
.main .mod_feature2 p {
  margin: 0 auto 0;
  width: 740px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -10px -130px;
}
.main .mod_feature2 ul {
  text-align: center;
}
.main .mod_feature2 ul li {
  display: inline-block;
  margin: 0 10px;
  width: 150px;
  text-align: center;
  color: #aaa;
}
.main .mod_feature2 ul li a .panle {
  margin: 0 auto;
  display: block;
  width: 100px;
  height: 100px;
}
.main .mod_feature2 ul li a .icon1 {
  background: url(../img/精灵图2.png) no-repeat -406px -600px;
}
.main .mod_feature2 ul li a .icon2 {
  background: url(../img/精灵图2.png) no-repeat -311px -498px;
}
.main .mod_feature2 ul li a .icon3 {
  background: url(../img/精灵图2.png) no-repeat -203px -500px;
}
.main .mod_feature3 {
  height: 1100px;
}
.main .mod_feature3 .feature_bg3 {
  height: 740px;
  background: url(../img/feature_thumb_4.jpg);
}
.main .mod_feature3 .feature_intro3 {
  padding-top: 40px;
  height: 400px;
  z-index: 20;
}
.main .mod_feature3 h2 {
  margin: 0 auto 25px;
  width: 460px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -5px -244px;
}
.main .mod_feature3 p {
  margin: 0 auto 0;
  width: 740px;
  height: 60px;
  background: url(../img/精灵图2.png) no-repeat -10px -185px;
}
.main .mod_feature3 ul {
  text-align: center;
}
.main .mod_feature3 ul li {
  display: inline-block;
  margin: 0 10px;
  width: 150px;
  text-align: center;
  color: #aaa;
}
.main .mod_feature3 ul li a .icon1 {
  margin: 0 auto;
  display: block;
  width: 100px;
  height: 100px;
  background: url(../img/精灵图2.png) no-repeat -512px -500px;
}
.main .mod_feature3 ul li a .icon2 {
  margin: 0 auto;
  display: block;
  width: 100px;
  height: 100px;
  background: url(../img/精灵图2.png) no-repeat -612px -500px;
}
.mod_tool_bar {
  position: fixed;
  width: 44px;
  height: 272px;
  padding-top: 54px;
  border-radius: 22px;
  right: 50px;
  top: 90px;
  background-color: rgba(0, 0, 0, 0.2);
}
.mod_tool_bar li {
  padding: 12px 7px;
  height: 54px;
}
.mod_tool_bar li:nth-child(1) a {
  display: block;
  height: 30px;
  background: url(../img/精灵图3.png) no-repeat -49px -249px;
}
.mod_tool_bar li:nth-child(2) a {
  display: block;
  height: 30px;
  background: url(../img/精灵图3.png) no-repeat -113px -246px;
}
.mod_tool_bar li:nth-child(3) a {
  display: block;
  height: 30px;
  background: url(../img/精灵图3.png) no-repeat -144px -246px;
}
